Calculator with perpetual calendar



FIG. 1 is a perspective view of the calculator with perpetual calendar in a closed state showing the new design;

FIG. 2 is a front view of the new design in a closed state;

FIG. 3 is a rear view of the new design in a closed state;

FIG. 4 is a left side view of the new design in a closed state;

FIG. 5 is a right view of the new design in a closed state;

FIG. 6 is a top view of the new design in a closed state;

FIG. 7 is a bottom view of the new design in a closed state;

FIG. 8 is a perspective view of the new design in an opened state;

FIG. 9 is a front view of the new design in an opened state;

FIG. 10 is a rear view of the new design in an opened state;

FIG. 11 is a left side view of the new design in an opened state;

FIG. 12 is a right view of the new design in an opened state;

FIG. 13 is a top view of the new design in an opened state; and,

FIG. 14 is a bottom view of the new design in an opened state. 

The ornamental design for a calculator with perpetual calendar, as shown and described. 